Sisters and best friends, Katie and Carrie Weyler, grew up in Ohio.  Katie is the oldest of five children, while Carrie is the youngest.  They have three brothers in between them, which made for a fun and adventurous upbringing.  Growing up, their family lived on a small 5-acre farm in the country that they shared with a horse, a goat, several adopted dogs and cats, and a couple of pigs that they showed in 4-H. They enjoyed playing outside, spending time with their pets, hiking, gardening, and exploring nature.  They also loved reading bedtime stories which inspired them to write the Charlie Tractor Books.